"It's quite common to fill one with liquid nitrogen, let it sit on the lab bench, and when you come back three days later there will still be liquid nitrogen in it. Now imagine what it can do for beer."

The largest of these steins—the ChemKeg Dominator—holds up to 4.3L of hot or cold beverage (or small, ice-preserved body parts), and likely requires more than one hand to lift. It'll set you back $375, should the Dominator ever come back in stock. [Etsy via The Awesomer via Nerd Approved]